path: root/mail/e-mail-tab.c

/*
 * Borrowed from Moblin-Web-Browser: The web browser for Moblin
 * Copyright (c) 2009, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU Lesser General Public License,
 * version 2.1, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <math.h>
#include <string.h>
#include <gtk/gtk.h>
#include "e-mail-tab.h"

#define E_MAIL_TAB_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_MAIL_TAB, EMailTabPrivate))

#define E_MAIL_PIXBOUND(u) ((gfloat)((gint)(u)))

static void mx_draggable_iface_init (MxDraggableIface *iface);

G_DEFINE_TYPE_WITH_CODE (
    EMailTab,
    e_mail_tab,
    MX_TYPE_WIDGET,
    G_IMPLEMENT_INTERFACE (
        MX_TYPE_DRAGGABLE, mx_draggable_iface_init))

enum {
    PROP_0,
    PROP_ICON,
    PROP_TEXT,
    PROP_CAN_CLOSE,
    PROP_TAB_WIDTH,
    PROP_DOCKING,
    PROP_PREVIEW,
    PROP_PREVIEW_MODE,
    PROP_PREVIEW_DURATION,
    PROP_SPACING,
    PROP_PRIVATE,
    PROP_ACTIVE,
    PROP_DRAG_THRESHOLD,
    PROP_DRAG_AXIS,
    PROP_DRAG_CONTAINMENT_AREA,
    PROP_DRAG_ENABLED,
    PROP_DRAG_ACTOR,
};

enum {
    CLICKED,
    CLOSED,
    TRANSITION_COMPLETE,
    LAST_SIGNAL
};

/* Animation stage lengths */
#define TAB_S1_ANIM 0.75
#define TAB_S2_ANIM (1.0-TAB_S1_ANIM)

static guint signals[LAST_SIGNAL] = { 0, };

static void e_mail_tab_close_clicked_cb (MxButton *button, EMailTab *self);

struct _EMailTabPrivate {
    ClutterActor *icon;
    ClutterActor *default_icon;
    ClutterActor *label;
    ClutterActor *close_button;
    gboolean can_close;
    gint width;
    gboolean docking;
    gfloat spacing;
    gboolean private;
    guint alert_count;
    guint alert_source;
    gboolean has_text;

    guint active    : 1;
    guint pressed : 1;
    guint hover  : 1;

    ClutterActor *preview;
    gboolean preview_mode;
    ClutterTimeline *preview_timeline;
    gdouble preview_height_progress;
    guint anim_length;

    ClutterActor *old_bg;

    ClutterActor *drag_actor;
    ClutterActorBox drag_area;
    gboolean drag_enabled;
    MxDragAxis drag_axis;
    gint drag_threshold;
    gulong drag_threshold_handler;
    gfloat press_x;
    gfloat press_y;
    gboolean in_drag;
};

static void
e_mail_tab_drag_begin (MxDraggable *draggable,
                       gfloat event_x,
                       gfloat event_y,
                       gint event_button,
                       ClutterModifierType modifiers)
{
    EMailTabPrivate *priv;
    ClutterActor *self = CLUTTER_ACTOR (draggable);
    ClutterActor *actor = mx_draggable_get_drag_actor (draggable);
    ClutterActor *stage = clutter_actor_get_stage (self);
    gfloat x, y;

    priv = E_MAIL_TAB_GET_PRIVATE (draggable);
    priv->in_drag = TRUE;

    clutter_actor_get_transformed_position (self, &x, &y);
    clutter_actor_set_position (actor, x, y);

    /* Start up animation */
    if (CLUTTER_IS_TEXTURE (actor)) {
        /* TODO: Some neat deformation effect? */
    } else {
        /* Fade in */
        clutter_actor_set_opacity (actor, 0x00);
        clutter_actor_animate (
            actor, CLUTTER_LINEAR, 150,
            "opacity", 0xff,
            NULL);
    }

    clutter_container_add_actor (CLUTTER_CONTAINER (stage), actor);
}

static void
e_mail_tab_drag_motion (MxDraggable *draggable,
                        gfloat delta_x,
                        gfloat delta_y)
{
    ClutterActor *actor = mx_draggable_get_drag_actor (draggable);
    clutter_actor_move_by (actor, delta_x, delta_y);
}

static void
e_mail_tab_drag_end_anim_cb (ClutterAnimation *animation,
                             EMailTab *tab)
{
    ClutterActor *actor =
        CLUTTER_ACTOR (clutter_animation_get_object (animation));
    ClutterActor *parent = clutter_actor_get_parent (actor);

    if (parent)
        clutter_container_remove_actor (
            CLUTTER_CONTAINER (parent), actor);
}

static void
e_mail_tab_drag_end (MxDraggable *draggable,
                     gfloat event_x,
                     gfloat event_y)
{
    EMailTab *self = E_MAIL_TAB (draggable);
    EMailTabPrivate *priv = self->priv;

    priv->in_drag = FALSE;

    if (priv->drag_actor) {
        ClutterActor *parent = clutter_actor_get_parent (priv->drag_actor);
        if (parent) {
            /* Animate drop */
            if (CLUTTER_IS_TEXTURE (priv->drag_actor)) {
                /* TODO: Some neat deformation effect? */
                clutter_container_remove_actor (
                    CLUTTER_CONTAINER (parent),
                    priv->drag_actor);
            } else {
                clutter_actor_animate (
                    priv->drag_actor,
                    CLUTTER_LINEAR, 150,
                    "opacity", 0x00,
                    "signal::completed",
                    G_CALLBACK (e_mail_tab_drag_end_anim_cb),
                    self, NULL);
            }
        }

        g_object_unref (priv->drag_actor);
        priv->drag_actor = NULL;
    }
}

static void
mx_draggable_iface_init (MxDraggableIface *iface)
{
    iface->drag_begin = e_mail_tab_drag_begin;
    iface->drag_motion = e_mail_tab_drag_motion;
    iface->drag_end = e_mail_tab_drag_end;
}

static void
e_mail_tab_get_property (GObject *object,
                         guint property_id,
                         GValue *value,
                         GParamSpec *pspec)
{
    EMailTab *tab = E_MAIL_TAB (object);
    EMailTabPrivate *priv = tab->priv;

    switch (property_id) {
        case PROP_ICON:
            g_value_set_object (value, e_mail_tab_get_icon (tab));
            break;

        case PROP_TEXT:
            g_value_set_string (value, e_mail_tab_get_text (tab));
            break;

        case PROP_CAN_CLOSE:
            g_value_set_boolean (value, e_mail_tab_get_can_close (tab));
            break;

        case PROP_TAB_WIDTH:
            g_value_set_int (value, e_mail_tab_get_width (tab));
            break;

        case PROP_DOCKING:
            g_value_set_boolean (value, e_mail_tab_get_docking (tab));
            break;

        case PROP_PREVIEW:
            g_value_set_object (value, e_mail_tab_get_preview_actor (tab));
            break;

        case PROP_PREVIEW_MODE:
            g_value_set_boolean (value, e_mail_tab_get_preview_mode (tab));
            break;

        case PROP_PREVIEW_DURATION:
            g_value_set_uint (value, e_mail_tab_get_preview_duration (tab));
            break;

        case PROP_SPACING:
            g_value_set_float (value, e_mail_tab_get_spacing (tab));
            break;

        case PROP_PRIVATE:
            g_value_set_boolean (value, e_mail_tab_get_private (tab));
            break;

        case PROP_ACTIVE:
            g_value_set_boolean (value, e_mail_tab_get_active (tab));
            break;

        case PROP_DRAG_THRESHOLD:
            g_value_set_uint (value, (guint) priv->drag_threshold);
            break;

        case PROP_DRAG_AXIS:
            g_value_set_enum (value, priv->drag_axis);
            break;

        case PROP_DRAG_CONTAINMENT_AREA:
            g_value_set_boxed (value, &priv->drag_area);
            break;

        case PROP_DRAG_ENABLED:
            g_value_set_boolean (value, priv->drag_enabled);
            break;

        case PROP_DRAG_ACTOR:
            if (!priv->drag_actor)
                priv->drag_actor = g_object_ref_sink (
                    clutter_clone_new (CLUTTER_ACTOR (tab)));
            g_value_set_object (value, priv->drag_actor);
            break;

        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
        }
}

static void
e_mail_tab_set_property (GObject *object,
                         guint property_id,
                         const GValue *value,
                         GParamSpec *pspec)
{
    EMailTab *tab = E_MAIL_TAB (object);
    EMailTabPrivate *priv = tab->priv;

    switch (property_id) {
        case PROP_ICON:
            e_mail_tab_set_icon (
                tab, g_value_get_object (value));
            break;

        case PROP_TEXT:
            e_mail_tab_set_text (
                tab, g_value_get_string (value));
            break;

        case PROP_CAN_CLOSE:
            e_mail_tab_set_can_close (
                tab, g_value_get_boolean (value));

        case PROP_TAB_WIDTH:
            e_mail_tab_set_width (
                tab, g_value_get_int (value));
            break;

        case PROP_DOCKING:
            e_mail_tab_set_docking (
                tab, g_value_get_boolean (value));
            break;

        case PROP_PREVIEW:
            e_mail_tab_set_preview_actor (
                tab, g_value_get_object (value));
            break;

        case PROP_PREVIEW_MODE:
            e_mail_tab_set_preview_mode (
                tab, g_value_get_boolean (value));
            break;

        case PROP_PREVIEW_DURATION:
            e_mail_tab_set_preview_duration (
                tab, g_value_get_uint (value));
            break;

        case PROP_SPACING:
            e_mail_tab_set_spacing (
                tab, g_value_get_float (value));
            break;

        case PROP_PRIVATE:
            e_mail_tab_set_private (
                tab, g_value_get_boolean (value));
            break;

        case PROP_ACTIVE:
            e_mail_tab_set_active (
                tab, g_value_get_boolean (value));
            break;

        case PROP_DRAG_THRESHOLD:
            break;

        case PROP_DRAG_AXIS:
            priv->drag_axis = g_value_get_enum (value);
            break;

        case PROP_DRAG_CONTAINMENT_AREA:
        {
            ClutterActorBox *box = g_value_get_boxed (value);

            if (box)
                priv->drag_area = *box;
            else
                memset (
                    &priv->drag_area, 0,
                    sizeof (ClutterActorBox));
            break;
        }

        case PROP_DRAG_ENABLED:
            priv->drag_enabled = g_value_get_boolean (value);
            break;

        case PROP_DRAG_ACTOR:
        {
            ClutterActor *new_actor = g_value_get_object (value);

            if (priv->drag_actor) {
                ClutterActor *parent;

                parent = clutter_actor_get_parent (priv->drag_actor);

                /* We know it's a container because we added it ourselves */
                if (parent)
                    clutter_container_remove_actor (
                        CLUTTER_CONTAINER (parent),
                        priv->drag_actor);

                g_object_unref (priv->drag_actor);
                priv->drag_actor = NULL;
            }

            if (new_actor)
                priv->drag_actor = g_object_ref_sink (new_actor);

            break;
        }

        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
    }
}

static void
e_mail_tab_dispose_old_bg (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->old_bg) {
        ClutterActor *parent;

        parent = clutter_actor_get_parent (priv->old_bg);
        if (parent == (ClutterActor *) tab)
            clutter_actor_unparent (priv->old_bg);
        g_object_unref (priv->old_bg);
        priv->old_bg = NULL;
    }
}

static void
e_mail_tab_dispose (GObject *object)
{
    EMailTab *tab = E_MAIL_TAB (object);
    EMailTabPrivate *priv = tab->priv;

    e_mail_tab_dispose_old_bg (tab);

    if (priv->icon) {
        clutter_actor_unparent (priv->icon);
        priv->icon = NULL;
    }

    if (priv->default_icon) {
        g_object_unref (priv->default_icon);
        priv->default_icon = NULL;
    }

    if (priv->label) {
        clutter_actor_unparent (CLUTTER_ACTOR (priv->label));
        priv->label = NULL;
    }

    if (priv->close_button) {
        clutter_actor_unparent (CLUTTER_ACTOR (priv->close_button));
        priv->close_button = NULL;
    }

    if (priv->preview) {
        clutter_actor_unparent (priv->preview);
        priv->preview = NULL;
    }

    if (priv->alert_source) {
        g_source_remove (priv->alert_source);
        priv->alert_source = 0;
    }

    if (priv->drag_actor) {
        ClutterActor *parent;

        parent = clutter_actor_get_parent (priv->drag_actor);
        if (parent)
            clutter_container_remove_actor (
                CLUTTER_CONTAINER (parent),
                priv->drag_actor);

        g_object_unref (priv->drag_actor);
        priv->drag_actor = NULL;
    }

    if (priv->drag_threshold_handler)
        g_signal_handler_disconnect (
            gtk_settings_get_default (),
            priv->drag_threshold_handler);
            priv->drag_threshold_handler = 0;

    G_OBJECT_CLASS (e_mail_tab_parent_class)->dispose (object);
}

static void
e_mail_tab_get_preferred_width (ClutterActor *actor,
                                gfloat for_height,
                                gfloat *min_width_p,
                                gfloat *natural_width_p)
{
    EMailTabPrivate *priv;
    MxPadding padding;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    /* Get padding */
    mx_widget_get_padding (MX_WIDGET (actor), &padding);
    if (min_width_p)
        *min_width_p = padding.left + padding.right;
    if (natural_width_p)
        *natural_width_p = padding.left + padding.right;

    if (priv->width >= 0) {
        if (natural_width_p)
            *natural_width_p += priv->width;
    } else {
        gfloat min_width, nat_width, acc_min_width, acc_nat_width;

        acc_min_width = acc_nat_width = 0;

        if (priv->has_text)
            clutter_actor_get_preferred_size (
                CLUTTER_ACTOR (priv->label),
                &acc_min_width, NULL,
                &acc_nat_width, NULL);

        if (priv->icon)
            clutter_actor_get_preferred_size (
                priv->icon,
                &min_width, NULL,
                &nat_width, NULL);
                acc_min_width += min_width;
                acc_nat_width += nat_width;

        if (priv->can_close)
            clutter_actor_get_preferred_size (
                CLUTTER_ACTOR (priv->close_button),
                &min_width, NULL,
                &nat_width, NULL);
                acc_min_width += min_width;
                acc_nat_width += nat_width;

        if (priv->preview && priv->preview_mode) {
            clutter_actor_get_preferred_size (
                priv->preview,
                &min_width, NULL,
                &nat_width, NULL);

            if (min_width > acc_min_width)
                acc_min_width = min_width;
            if (nat_width > acc_nat_width)
                acc_nat_width = nat_width;
        }

        if (min_width_p)
            *min_width_p += acc_min_width;
        if (natural_width_p)
            *natural_width_p += acc_nat_width;
    }
}

void
e_mail_tab_get_height_no_preview (EMailTab *tab,
                                  gfloat for_width,
                                  gfloat *min_height_p,
                                  gfloat *natural_height_p)
{
    MxPadding padding;
    gfloat min_height, nat_height, tmp_min_height, tmp_nat_height;

    ClutterActor *actor = CLUTTER_ACTOR (tab);
    EMailTabPrivate *priv = tab->priv;

    /* Get padding */
    mx_widget_get_padding (MX_WIDGET (actor), &padding);
    if (min_height_p)
        *min_height_p = padding.top + padding.bottom;
    if (natural_height_p)
        *natural_height_p = padding.top + padding.bottom;

    min_height = nat_height = 0;
    if (priv->has_text)
        clutter_actor_get_preferred_height (
            CLUTTER_ACTOR (priv->label), -1,
            &min_height, &nat_height);

    if (priv->icon) {
        clutter_actor_get_preferred_height (
            priv->icon, -1, &tmp_min_height, &tmp_nat_height);
        if (tmp_min_height > min_height)
            min_height = tmp_min_height;
        if (tmp_nat_height > nat_height)
            nat_height = tmp_nat_height;
    }

    if (priv->can_close) {
        clutter_actor_get_preferred_height (
            CLUTTER_ACTOR (priv->close_button),
            -1, &tmp_min_height, &tmp_nat_height);

        if (tmp_min_height > min_height)
            min_height = tmp_min_height;
        if (tmp_nat_height > nat_height)
            nat_height = tmp_nat_height;
    }

    if (min_height_p)
        *min_height_p += min_height;
    if (natural_height_p)
        *natural_height_p += nat_height;
}

static void
e_mail_tab_get_preferred_height (ClutterActor *actor,
                                 gfloat for_width,
                                 gfloat *min_height_p,
                                 gfloat *natural_height_p)
{
    EMailTab *tab = E_MAIL_TAB (actor);
    EMailTabPrivate *priv = tab->priv;

    e_mail_tab_get_height_no_preview (
        tab, for_width, min_height_p, natural_height_p);

    if (priv->preview) {
        MxPadding padding;
        gfloat min_height, nat_height;
        gfloat label_min_height, label_nat_height;

        /* Get preview + padding height */
        mx_widget_get_padding (MX_WIDGET (actor), &padding);

        clutter_actor_get_preferred_height (
            priv->preview,
            (gfloat) priv->width,
            &min_height, &nat_height);

        /* Add label height */
        clutter_actor_get_preferred_height (
            CLUTTER_ACTOR (priv->label), -1,
            &label_min_height, &label_nat_height);

        min_height =
            (min_height * priv->preview_height_progress) +
            padding.top + padding.bottom + priv->spacing +
            label_min_height;

        nat_height =
            (nat_height * priv->preview_height_progress) +
            padding.top + padding.bottom + priv->spacing +
            label_nat_height;

        /* Sometimes the preview's natural height will be nan due to
         * keeping of the aspect ratio. This guards against that and
         * stops Clutter from warning that the natural height is less
         * than the minimum height. */
        if (isnan (nat_height))
            nat_height = min_height;

        if (min_height_p && (min_height > *min_height_p))
            *min_height_p = min_height;
        if (natural_height_p && (nat_height > *natural_height_p))
            *natural_height_p = nat_height;
    }
}

static void
e_mail_tab_allocate (ClutterActor *actor,
                     const ClutterActorBox *box,
                     ClutterAllocationFlags flags)
{
    EMailTabPrivate *priv;
    MxPadding padding;
    ClutterActorBox child_box;
    gfloat icon_width, icon_height;
    gfloat label_width, label_height;
    gfloat close_width, close_height;
    gfloat preview_width, preview_height;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    /* Chain up to store box */
    CLUTTER_ACTOR_CLASS (e_mail_tab_parent_class)->allocate (actor, box, flags);

    /* Possibly synchronise an axis if we're dragging */
    if (priv->in_drag) {
        ClutterActor *drag_actor =
            mx_draggable_get_drag_actor (MX_DRAGGABLE (actor));

        if (drag_actor) {
            gfloat x, y;
            clutter_actor_get_transformed_position (actor, &x, &y);

            switch (mx_draggable_get_axis (MX_DRAGGABLE (actor))) {
                case MX_DRAG_AXIS_X :
                    /* Synchronise y axis */
                    clutter_actor_set_y (drag_actor, y);
                    break;
                case MX_DRAG_AXIS_Y :
                    /* Synchronise x axis */
                    clutter_actor_set_x (drag_actor, x);
                    break;
                default:
                    break;
            }
        }
    }

    /* Allocate old background texture */
    if (priv->old_bg) {
        child_box.x1 = 0;
        child_box.y1 = 0;
        child_box.x2 = box->x2 - box->x1;
        child_box.y2 = box->y2 - box->y1;
        clutter_actor_allocate (priv->old_bg, &child_box, flags);
    }

    mx_widget_get_padding (MX_WIDGET (actor), &padding);

    /* Get the preferred width/height of the icon,
     * label and close-button first. */
    if (priv->icon)
        clutter_actor_get_preferred_size (
            priv->icon, NULL, NULL,
            &icon_width, &icon_height);

    clutter_actor_get_preferred_size (
        CLUTTER_ACTOR (priv->label), NULL, NULL,
        &label_width, &label_height);

    if (priv->can_close)
        clutter_actor_get_preferred_size (
            CLUTTER_ACTOR (priv->close_button),
            NULL, NULL, &close_width, &close_height);

    /* Allocate for icon */
    if (priv->icon) {
        child_box.x1 = padding.left;
        child_box.x2 = child_box.x1 + icon_width;
        child_box.y1 = E_MAIL_PIXBOUND ((box->y2 - box->y1) / 2 - icon_height / 2);
        child_box.y2 = child_box.y1 + icon_height;
        clutter_actor_allocate (priv->icon, &child_box, flags);
    }

    /* Allocate for close button */
    if (priv->can_close) {
        child_box.x2 = box->x2 - box->x1 - padding.right;
        child_box.x1 = child_box.x2 - close_width;
        child_box.y1 = E_MAIL_PIXBOUND ((box->y2 - box->y1) / 2 - close_height / 2);
        child_box.y2 = child_box.y1 + close_height;
        clutter_actor_allocate (
            CLUTTER_ACTOR (priv->close_button),
            &child_box, flags);
    }

    /* Allocate for preview widget */
    preview_height = 0;
    if (priv->preview) {
        preview_width =
            (box->x2 - box->x1 -
             padding.left - padding.right);
        preview_height =
            (box->y2 - box->y1 -
             padding.top - padding.bottom -
             priv->spacing - label_height);

        child_box.x1 = E_MAIL_PIXBOUND (padding.left);
        child_box.y1 = E_MAIL_PIXBOUND (padding.top);
        child_box.x2 = child_box.x1 + preview_width;
        child_box.y2 = child_box.y1 + preview_height;

        clutter_actor_allocate (priv->preview, &child_box, flags);
    }

    /* Allocate for label */
    if ((priv->preview_height_progress <= TAB_S1_ANIM) || (!priv->preview)) {
        if (priv->icon)
            child_box.x1 = E_MAIL_PIXBOUND (
                padding.left + icon_width + priv->spacing);
        else
            child_box.x1 = E_MAIL_PIXBOUND (padding.left);
        child_box.x2 = (box->x2 - box->x1 - padding.right);
        child_box.y1 = E_MAIL_PIXBOUND (
            (box->y2 - box->y1) / 2 - label_height / 2);
        child_box.y2 = child_box.y1 + label_height;

        /* If close button is visible, don't overlap it */
        if (priv->can_close)
            child_box.x2 -= close_width + priv->spacing;
    } else {
        /* Put label underneath preview */
        child_box.x1 = E_MAIL_PIXBOUND (padding.left);
        child_box.x2 = (box->x2 - box->x1 - padding.right);
        child_box.y1 = E_MAIL_PIXBOUND (
            padding.top + preview_height + priv->spacing);
        child_box.y2 = child_box.y1 + label_height;
    }

    clutter_actor_allocate (CLUTTER_ACTOR (priv->label), &child_box, flags);

    /* If we're in preview mode, re-allocate the background so it doesn't
     * encompass the label. (A bit hacky?)
     */
    if (priv->preview && CLUTTER_ACTOR_IS_VISIBLE (priv->preview)) {
        gfloat max_height = padding.top + padding.bottom + preview_height;
        if (box->y2 - box->y1 > max_height) {
            MxWidget *widget = MX_WIDGET (actor);
            ClutterActor *background = mx_widget_get_border_image (widget);

            if (!background)
                background = mx_widget_get_background_image (widget);

            child_box.x1 = 0;
            child_box.x2 = box->x2 - box->x1;
            child_box.y1 = 0;
            child_box.y2 = max_height;

            if (background)
                clutter_actor_allocate (
                    background, &child_box, flags);

            if (priv->old_bg && (priv->old_bg != background))
                clutter_actor_allocate (
                    priv->old_bg, &child_box, flags);
        }
    }
}

static void
e_mail_tab_paint (ClutterActor *actor)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    /* Chain up to paint background */
    CLUTTER_ACTOR_CLASS (e_mail_tab_parent_class)->paint (actor);

    if (priv->old_bg)
        clutter_actor_paint (priv->old_bg);

    if (priv->icon)
        clutter_actor_paint (priv->icon);

    clutter_actor_paint (CLUTTER_ACTOR (priv->label));

    if (priv->can_close)
        clutter_actor_paint (CLUTTER_ACTOR (priv->close_button));

    if (priv->preview)
        clutter_actor_paint (CLUTTER_ACTOR (priv->preview));
}

static void
e_mail_tab_pick (ClutterActor *actor,
                 const ClutterColor *c)
{
    CLUTTER_ACTOR_CLASS (e_mail_tab_parent_class)->pick (actor, c);

    if (clutter_actor_should_pick_paint (actor))
        e_mail_tab_paint (actor);
}

static void
e_mail_tab_map (ClutterActor *actor)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    CLUTTER_ACTOR_CLASS (e_mail_tab_parent_class)->map (actor);

    clutter_actor_map (CLUTTER_ACTOR (priv->label));
    clutter_actor_map (CLUTTER_ACTOR (priv->close_button));

    if (priv->icon)
        clutter_actor_map (priv->icon);
    if (priv->preview)
        clutter_actor_map (priv->preview);
    if (priv->old_bg)
        clutter_actor_map (priv->old_bg);
}

static void
e_mail_tab_unmap (ClutterActor *actor)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    CLUTTER_ACTOR_CLASS (e_mail_tab_parent_class)->unmap (actor);

    clutter_actor_unmap (CLUTTER_ACTOR (priv->label));
    clutter_actor_unmap (CLUTTER_ACTOR (priv->close_button));

    if (priv->icon)
        clutter_actor_unmap (priv->icon);
    if (priv->preview)
        clutter_actor_unmap (priv->preview);
    if (priv->old_bg)
        clutter_actor_unmap (priv->old_bg);
}

static gboolean
e_mail_tab_button_press_event (ClutterActor *actor,
                               ClutterButtonEvent *event)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    if (event->button == 1) {
        mx_stylable_set_style_pseudo_class (
            MX_STYLABLE (actor), "active");
        clutter_grab_pointer (actor);
        priv->pressed = TRUE;

        priv->press_x = event->x;
        priv->press_y = event->y;
    }

    /* We have to always return false, or dragging won't work */
    return FALSE;
}

static gboolean
e_mail_tab_button_release_event (ClutterActor *actor,
                                 ClutterButtonEvent *event)
{
    EMailTab *tab = E_MAIL_TAB (actor);
    EMailTabPrivate *priv = tab->priv;

    if (priv->pressed) {
        clutter_ungrab_pointer ();
        priv->pressed = FALSE;

        /* Note, no need to set the pseudo class here as clicking
         * always results in being set active. */
        if (priv->hover) {
            if (!priv->active)
                e_mail_tab_set_active (tab, TRUE);

            g_signal_emit (actor, signals[CLICKED], 0);
        }
    }

    return FALSE;
}

static gboolean
e_mail_tab_motion_event (ClutterActor *actor,
                         ClutterMotionEvent *event)
{
    EMailTab *tab = E_MAIL_TAB (actor);
    EMailTabPrivate *priv = tab->priv;

    if (priv->pressed && priv->drag_enabled) {
        if ((ABS (event->x - priv->press_x) >= priv->drag_threshold) ||
            (ABS (event->y - priv->press_y) >= priv->drag_threshold)) {
            /* Ungrab the pointer so that the MxDraggable code can take over */
            clutter_ungrab_pointer ();
            priv->pressed = FALSE;
            if (!priv->active) {
                if (priv->hover)
                    mx_stylable_set_style_pseudo_class (
                        MX_STYLABLE (actor), "hover");
                else
                    mx_stylable_set_style_pseudo_class (
                        MX_STYLABLE (actor), NULL);
            }
        }
    }

    return FALSE;
}

static gboolean
e_mail_tab_enter_event (ClutterActor *actor,
                        ClutterCrossingEvent *event)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    if (event->source != actor)
        return FALSE;

    priv->hover = TRUE;

    if (priv->pressed)
        mx_stylable_set_style_pseudo_class (
            MX_STYLABLE (actor), "active");
    else if (!priv->active)
        mx_stylable_set_style_pseudo_class (
            MX_STYLABLE (actor), "hover");

    return FALSE;
}

static gboolean
e_mail_tab_leave_event (ClutterActor *actor,
                        ClutterCrossingEvent *event)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (actor);

    if ((event->source != actor) ||
        (event->related == (ClutterActor *) priv->close_button))
        return FALSE;

    priv->hover = FALSE;

    if (!priv->active)
        mx_stylable_set_style_pseudo_class (MX_STYLABLE (actor), NULL);

    return FALSE;
}

static void
e_mail_tab_class_init (EMailTabClass *class)
{
    GObjectClass *object_class = G_OBJECT_CLASS (class);
    ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (class);

    g_type_class_add_private (class, sizeof (EMailTabPrivate));

    object_class->get_property = e_mail_tab_get_property;
    object_class->set_property = e_mail_tab_set_property;
    object_class->dispose = e_mail_tab_dispose;

    actor_class->get_preferred_width = e_mail_tab_get_preferred_width;
    actor_class->get_preferred_height = e_mail_tab_get_preferred_height;
    actor_class->button_press_event = e_mail_tab_button_press_event;
    actor_class->button_release_event = e_mail_tab_button_release_event;
    actor_class->motion_event = e_mail_tab_motion_event;
    actor_class->enter_event = e_mail_tab_enter_event;
    actor_class->leave_event = e_mail_tab_leave_event;
    actor_class->allocate = e_mail_tab_allocate;
    actor_class->paint = e_mail_tab_paint;
    actor_class->pick = e_mail_tab_pick;
    actor_class->map = e_mail_tab_map;
    actor_class->unmap = e_mail_tab_unmap;

    g_object_class_install_property (
        object_class,
        PROP_ICON,
        g_param_spec_object (
            "icon",
            "Icon",
            "Icon actor.",
            CLUTTER_TYPE_ACTOR,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_TEXT,
        g_param_spec_string (
            "text",
            "Text",
            "Tab text.",
            "",
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_CAN_CLOSE,
        g_param_spec_boolean (
            "can-close",
            "Can close",
            "Whether the tab can "
            "close.",
            TRUE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_TAB_WIDTH,
        g_param_spec_int (
            "tab-width",
            "Tab width",
            "Tab width.",
            -1, G_MAXINT, -1,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_DOCKING,
        g_param_spec_boolean (
            "docking",
            "Docking",
            "Whether the tab should dock to edges when scrolled.",
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_PREVIEW,
        g_param_spec_object (
            "preview",
            "Preview actor",
            "ClutterActor used "
            "when in preview mode.",
            CLUTTER_TYPE_ACTOR,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_PREVIEW_MODE,
        g_param_spec_boolean (
            "preview-mode",
            "Preview mode",
            "Whether to display "
            "in preview mode.",
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_PREVIEW_DURATION,
        g_param_spec_uint (
            "preview-duration",
            "Preview duration",
            "How long the transition "
            "between preview mode "
            "states lasts, in ms.",
            0, G_MAXUINT, 200,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_SPACING,
        g_param_spec_float (
            "spacing",
            "Spacing",
            "Spacing between "
            "tab elements.",
            0, G_MAXFLOAT,
            6.0,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_PRIVATE,
        g_param_spec_boolean (
            "private",
            "Private",
            "Set if the tab is "
            "'private'.",
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_ACTIVE,
        g_param_spec_boolean (
            "active",
            "Active",
            "Set if the tab is "
            "active.",
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_override_property (
        object_class,
        PROP_DRAG_THRESHOLD,
        "drag-threshold");

    g_object_class_override_property (
        object_class,
        PROP_DRAG_AXIS,
        "axis");

    g_object_class_override_property (
        object_class,
        PROP_DRAG_CONTAINMENT_AREA,
        "containment-area");

    g_object_class_override_property (
        object_class,
        PROP_DRAG_ENABLED,
        "drag-enabled");

    g_object_class_override_property (
        object_class,
        PROP_DRAG_ACTOR,
        "drag-actor");

    signals[CLICKED] = g_signal_new (
        "clicked",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EMailTabClass, clicked),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signals[CLOSED] = g_signal_new (
        "closed",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EMailTabClass, closed),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    signals[TRANSITION_COMPLETE] = g_signal_new (
        "transition-complete",
        G_TYPE_FROM_CLASS (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (EMailTabClass, transition_complete),
        NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);
}

static void
e_mail_tab_close_clicked_cb (MxButton *button,
                             EMailTab *self)
{
    g_signal_emit (self, signals[CLOSED], 0);
}

static void
e_mail_tab_anim_completed_cb (ClutterAnimation *animation,
                              EMailTab *tab)
{
    e_mail_tab_dispose_old_bg (tab);
}

static void
e_mail_tab_style_changed_cb (MxWidget *widget)
{
    EMailTabPrivate *priv;

    priv = E_MAIL_TAB_GET_PRIVATE (widget);

    /* Don't transition on hover */
    if (g_strcmp0 (mx_stylable_get_style_pseudo_class (
        MX_STYLABLE (widget)), "hover") == 0)
        return;

    if (priv->old_bg) {
        if (!clutter_actor_get_parent (priv->old_bg)) {
            ClutterActorBox box;
            ClutterActor *background;
            ClutterActor *actor = CLUTTER_ACTOR (widget);

            clutter_actor_set_parent (priv->old_bg, actor);

            /* Try to allocate the same size as the background
             * widget, otherwise allocate the same size as the
             * widget itself. */
            background = mx_widget_get_border_image (widget);
            if (!background)
                background = mx_widget_get_background_image (widget);

            if (background)
                clutter_actor_get_allocation_box (background, &box);
            else {
                clutter_actor_get_allocation_box (actor, &box);
                box.x2 -= box.x1;
                box.y2 -= box.y1;
                box.x1 = 0;
                box.y1 = 0;
            }

            clutter_actor_allocate (priv->old_bg, &box, 0);
        }

        clutter_actor_animate (
            priv->old_bg, CLUTTER_LINEAR, 150,
            "opacity", 0, "signal::completed",
            G_CALLBACK (e_mail_tab_anim_completed_cb),
            widget, NULL);
    }
}

static void
e_mail_tab_stylable_changed_cb (MxStylable *stylable)
{
    EMailTab *tab = E_MAIL_TAB (stylable);
    EMailTabPrivate *priv = tab->priv;

    e_mail_tab_dispose_old_bg (tab);

    priv->old_bg = mx_widget_get_border_image (MX_WIDGET (tab));
    if (priv->old_bg)
        g_object_ref (priv->old_bg);
}

static void
e_mail_tab_dnd_notify_cb (GObject *settings,
                          GParamSpec *pspec,
                          EMailTab *tab)
{
    g_object_get (
        settings,
        "gtk-dnd-drag-threshold", &tab->priv->drag_threshold,
        NULL);
}

static void
e_mail_tab_init (EMailTab *tab)
{
    ClutterActor *text;
    GtkSettings *settings;

    tab->priv = E_MAIL_TAB_GET_PRIVATE (tab);

    tab->priv->width = -1;
    tab->priv->anim_length = 200;
    tab->priv->spacing = 6.0;
    tab->priv->can_close = TRUE;

    tab->priv->label = mx_label_new ();
    g_object_set (tab->priv->label, "clip-to-allocation", TRUE, NULL);
    text = mx_label_get_clutter_text (MX_LABEL (tab->priv->label));
    clutter_text_set_ellipsize (CLUTTER_TEXT (text), PANGO_ELLIPSIZE_END);
    clutter_actor_set_parent (
        CLUTTER_ACTOR (tab->priv->label), CLUTTER_ACTOR (tab));

    tab->priv->close_button = mx_button_new ();
    clutter_actor_set_name (
        CLUTTER_ACTOR (tab->priv->close_button), "tab-close-button");
    clutter_actor_set_parent (
        CLUTTER_ACTOR (tab->priv->close_button), CLUTTER_ACTOR (tab));

    g_signal_connect (
        tab->priv->close_button, "clicked",
        G_CALLBACK (e_mail_tab_close_clicked_cb), tab);

    /* Connect up styling signals */
    g_signal_connect (
        tab, "style-changed",
        G_CALLBACK (e_mail_tab_style_changed_cb), NULL);
    g_signal_connect (
        tab, "stylable-changed",
        G_CALLBACK (e_mail_tab_stylable_changed_cb), NULL);

    clutter_actor_set_reactive (CLUTTER_ACTOR (tab), TRUE);

    settings = gtk_settings_get_default ();
    tab->priv->drag_threshold_handler = g_signal_connect (
        settings, "notify::gtk-dnd-drag-threshold",
        G_CALLBACK (e_mail_tab_dnd_notify_cb), tab);
    g_object_get (
        G_OBJECT (settings),
        "gtk-dnd-drag-threshold", &tab->priv->drag_threshold,
        NULL);
}

ClutterActor *
e_mail_tab_new (void)
{
    return g_object_new (E_TYPE_MAIL_TAB, NULL);
}

ClutterActor *
e_mail_tab_new_full (const gchar *text,
                     ClutterActor *icon,
                     gint width)
{
    return g_object_new (
        E_TYPE_MAIL_TAB,
        "text", text,
        "icon", icon,
        "tab-width", width,
        NULL);
}

void
e_mail_tab_set_text (EMailTab *tab,
                     const gchar *text)
{
    EMailTabPrivate *priv = tab->priv;

    if (!text)
        text = "";

    priv->has_text = (text[0] != '\0');

    if (priv->label)
        mx_label_set_text (MX_LABEL (priv->label), text);

    g_object_notify (G_OBJECT (tab), "text");
}

void
e_mail_tab_set_default_icon (EMailTab *tab,
                             ClutterActor *icon)
{
    EMailTabPrivate *priv = tab->priv;
    gboolean changed = !priv->icon || (priv->icon == priv->default_icon);

    if (icon)
        g_object_ref_sink (icon);

    if (priv->default_icon)
        g_object_unref (priv->default_icon);

    priv->default_icon = icon;

    if (changed)
        e_mail_tab_set_icon (tab, NULL);
}

void
e_mail_tab_set_icon (EMailTab *tab,
                     ClutterActor *icon)
{
    EMailTabPrivate *priv = tab->priv;

    /* passing NULL for icon will use default icon if available */

    if (priv->icon)
        clutter_actor_unparent (priv->icon);

    if (icon)
        priv->icon = icon;
    else
        priv->icon = priv->default_icon;

    if (priv->icon)
        clutter_actor_set_parent (priv->icon, CLUTTER_ACTOR (tab));

    clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));

    g_object_notify (G_OBJECT (tab), "icon");
}

const gchar *
e_mail_tab_get_text (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->label)
        return mx_label_get_text (MX_LABEL (priv->label));
    else
        return NULL;
}

ClutterActor *
e_mail_tab_get_icon (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->icon == priv->default_icon ? NULL : priv->icon;
}

void
e_mail_tab_set_can_close (EMailTab *tab,
                          gboolean can_close)
{
    EMailTabPrivate *priv = tab->priv;

    if ((priv->can_close ? 1 : 0) == (can_close ? 1 : 0))
        return;

    priv->can_close = can_close;

    clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));

    g_object_notify (G_OBJECT (tab), "can-close");
}

gboolean
e_mail_tab_get_can_close (EMailTab *tab)
{
    return tab->priv->can_close;
}

void
e_mail_tab_set_width (EMailTab *tab,
                      gint width)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->width == width)
        return;

    priv->width = width;

    clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));

    g_object_notify (G_OBJECT (tab), "tab-width");
}

gint
e_mail_tab_get_width (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->width;
}

void
e_mail_tab_set_docking (EMailTab *tab,
                        gboolean docking)
{
    EMailTabPrivate *priv = tab->priv;

    if ((priv->docking ? 1 : 0) == (docking ? 1 : 0))
        return;

    priv->docking = docking;

    clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));

    g_object_notify (G_OBJECT (tab), "docking");
}

gboolean
e_mail_tab_get_docking (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->docking;
}

void
e_mail_tab_set_preview_actor (EMailTab *tab,
                              ClutterActor *actor)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->preview)
        clutter_actor_unparent (priv->preview);

    priv->preview = actor;

    if (actor) {
        clutter_actor_set_parent (actor, CLUTTER_ACTOR (tab));

        clutter_actor_set_opacity (
            actor, priv->preview_mode ? 0xff : 0x00);
        if (!priv->preview_mode)
            clutter_actor_hide (actor);
    }

    clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));

    g_object_notify (G_OBJECT (tab), "preview");
}

ClutterActor *
e_mail_tab_get_preview_actor (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->preview;
}

static void
preview_new_frame_cb (ClutterTimeline *timeline,
                      guint msecs,
                      EMailTab *tab)
{
    gboolean forwards;
    EMailTabPrivate *priv = tab->priv;

    forwards =
        (clutter_timeline_get_direction (timeline) ==
         CLUTTER_TIMELINE_FORWARD);
    if (priv->preview_mode)
        forwards = !forwards;

    priv->preview_height_progress =
        clutter_timeline_get_progress (timeline);
    if (forwards)
        priv->preview_height_progress =
            1.0 - priv->preview_height_progress;

    if (priv->preview)
        clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));
}

static void
preview_completed_cb (ClutterTimeline *timeline,
                      EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->preview_timeline) {
        clutter_timeline_stop (priv->preview_timeline);
        g_object_unref (priv->preview_timeline);
        priv->preview_timeline = NULL;

        if (priv->preview_mode)
            priv->preview_height_progress = 1.0;
        else {
            priv->preview_height_progress = 0.0;
            if (priv->preview)
                clutter_actor_hide (priv->preview);
            if (priv->can_close)
                clutter_actor_set_reactive (
                    CLUTTER_ACTOR (priv->close_button),
                    TRUE);
        }

        /* Remove style hint if we're not in preview mode */
        if (priv->preview) {
            if (!priv->preview_mode)
                clutter_actor_set_name (
                    CLUTTER_ACTOR (tab),
                    priv->private ? "private-tab" : NULL);
        } else {
            /* If there's no preview actor, disable the tab */
            clutter_actor_set_reactive (
                CLUTTER_ACTOR (tab), !priv->preview_mode);
        }

        if (priv->preview)
            clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));

        g_signal_emit (tab, signals[TRANSITION_COMPLETE], 0);
    }
}

static void
preview_s1_started_cb (ClutterTimeline *timeline,
                       EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;

    if (!priv->preview)
        clutter_actor_animate_with_timeline (
            CLUTTER_ACTOR (priv->label),
            CLUTTER_EASE_IN_OUT_QUAD,
            timeline,
            "opacity", 0xff,
            NULL);
}

static void
preview_s2_started_cb (ClutterTimeline *timeline,
                       EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->preview)
        clutter_actor_animate_with_timeline (
            CLUTTER_ACTOR (priv->label),
            CLUTTER_EASE_IN_OUT_QUAD,
            timeline,
            "opacity", 0xff,
            NULL);
}

void
e_mail_tab_set_preview_mode (EMailTab *tab,
                             gboolean preview)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->preview_mode != preview) {
        ClutterTimeline *timeline, *timeline2;
        gdouble progress, total_duration, duration1, duration2;

        priv->preview_mode = preview;

        /* Disable the close button in preview mode */
        if (preview && priv->can_close)
            clutter_actor_set_reactive (CLUTTER_ACTOR (priv->close_button), FALSE);

#define DEBUG_MULT 1
        if (priv->preview_timeline) {
            progress = 1.0 - clutter_timeline_get_progress (
                priv->preview_timeline);
            clutter_timeline_stop (priv->preview_timeline);
            g_object_unref (priv->preview_timeline);
        } else
            progress = 0.0;

        total_duration = priv->anim_length * (1.0 - progress) * DEBUG_MULT;
        duration1 = total_duration * TAB_S1_ANIM;
        duration2 = total_duration * TAB_S2_ANIM;

        priv->preview_timeline =
            clutter_timeline_new (priv->anim_length * DEBUG_MULT);
        clutter_timeline_skip (
            priv->preview_timeline, clutter_timeline_get_duration (
            priv->preview_timeline) * progress);

        g_signal_connect (
            priv->preview_timeline, "completed",
            G_CALLBACK (preview_completed_cb), tab);

        clutter_timeline_start (priv->preview_timeline);

        if (!priv->preview) {
            clutter_actor_animate_with_timeline (
                CLUTTER_ACTOR (tab),
                CLUTTER_EASE_IN_OUT_QUAD,
                priv->preview_timeline,
                "opacity", preview ? 0x00 : 0xff,
                NULL);
            return;
        }

        g_signal_connect (
            priv->preview_timeline, "new-frame",
            G_CALLBACK (preview_new_frame_cb), tab);

        timeline = clutter_timeline_new ((guint) duration1);
        timeline2 = clutter_timeline_new ((guint) duration2);

        g_signal_connect (
            timeline, "started",
            G_CALLBACK (preview_s1_started_cb), tab);
        g_signal_connect (
            timeline2, "started",
            G_CALLBACK (preview_s2_started_cb), tab);

        if (preview)
            clutter_timeline_set_delay (timeline2, duration1);
        else
            clutter_timeline_set_delay (timeline, duration2);

        /* clutter_actor_animate_with_timeline will start the timelines */
        clutter_actor_animate_with_timeline (
            CLUTTER_ACTOR (priv->label),
            CLUTTER_EASE_IN_OUT_QUAD,
            preview ? timeline : timeline2,
            "opacity", 0x00, NULL);

        if (priv->icon)
            clutter_actor_animate_with_timeline (
                priv->icon,
                CLUTTER_EASE_IN_OUT_QUAD,
                timeline,
                "opacity", preview ? 0x00 : 0xff,
                NULL);

        if (priv->can_close)
            clutter_actor_animate_with_timeline (
                CLUTTER_ACTOR (priv->close_button),
                CLUTTER_EASE_IN_OUT_QUAD,
                timeline,
                "opacity", preview ? 0x00 : 0xff,
                NULL);

        if (priv->preview)
            clutter_actor_show (priv->preview);
            clutter_actor_animate_with_timeline (
                priv->preview,
                CLUTTER_EASE_IN_OUT_QUAD,
                timeline2,
                "opacity", preview ? 0xff : 0x00,
                NULL);

        /* The animations have references on these, drop ours */
        g_object_unref (timeline);
        g_object_unref (timeline2);

        /* Add an actor name, for style */
        clutter_actor_set_name (
            CLUTTER_ACTOR (tab),
            priv->private ? "private-preview-tab" :
            "preview-tab");
    }
}

gboolean
e_mail_tab_get_preview_mode (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->preview_mode;
}

void
e_mail_tab_set_preview_duration (EMailTab *tab,
                                 guint duration)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->anim_length != duration) {
        priv->anim_length = duration;
        g_object_notify (G_OBJECT (tab), "preview-duration");
    }
}

guint
e_mail_tab_get_preview_duration (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->anim_length;
}

void
e_mail_tab_set_spacing (EMailTab *tab,
                        gfloat spacing)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->spacing != spacing) {
        priv->spacing = spacing;
        g_object_notify (G_OBJECT (tab), "spacing");
        clutter_actor_queue_relayout (CLUTTER_ACTOR (tab));
    }
}

gfloat
e_mail_tab_get_spacing (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->spacing;
}

void
e_mail_tab_set_private (EMailTab *tab,
                        gboolean private)
{
    EMailTabPrivate *priv = tab->priv;

    if ((priv->private ? 1 : 0) == (private ? 1 : 0))
        return;

    priv->private = private;

    if (!priv->preview_mode)
        clutter_actor_set_name (
            CLUTTER_ACTOR (tab), private ? "private-tab" : NULL);

    g_object_notify (G_OBJECT (tab), "private");
}

gboolean
e_mail_tab_get_private (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->private;
}

void
e_mail_tab_set_active (EMailTab *tab,
                       gboolean active)
{
    EMailTabPrivate *priv = tab->priv;

    if ((priv->active ? 1 : 0) == (active ? 1 : 0))
        return;

    priv->active = active;

    g_object_notify (G_OBJECT (tab), "active");

    if (active)
        mx_stylable_set_style_pseudo_class (MX_STYLABLE (tab), "active");
    else if (!priv->pressed) {
        if (priv->hover)
            mx_stylable_set_style_pseudo_class (MX_STYLABLE (tab), "hover");
        else
            mx_stylable_set_style_pseudo_class (MX_STYLABLE (tab), NULL);
    }
}

gboolean
e_mail_tab_get_active (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;
    return priv->active;
}

static gboolean
e_mail_tab_alert_cb (EMailTab *tab)
{
    const gchar *name;
    EMailTabPrivate *priv = tab->priv;

    /* FIXME: Work in preview mode */

    /* Alternate between private mode and non-private to alert */
    name = (priv->private ^ (priv->alert_count % 2)) ? NULL : "private-tab";
    if (!priv->preview_mode)
        clutter_actor_set_name (CLUTTER_ACTOR (tab), name);
    priv->alert_count++;

    if (priv->alert_count < 4)
        return TRUE;

    priv->alert_source = 0;

    return FALSE;
}

void
e_mail_tab_alert (EMailTab *tab)
{
    EMailTabPrivate *priv = tab->priv;

    priv->alert_count = 0;
    if (!priv->alert_source)
        priv->alert_source =
            g_timeout_add_full (G_PRIORITY_HIGH,
                500,
                (GSourceFunc) e_mail_tab_alert_cb,
                tab,
                NULL);
}

void
e_mail_tab_enable_drag (EMailTab *tab,
                        gboolean enable)
{
    EMailTabPrivate *priv = tab->priv;

    if (priv->drag_enabled == enable)
        return;

    priv->drag_enabled = enable;
    if (enable)
        mx_draggable_enable (MX_DRAGGABLE (tab));
    else
        mx_draggable_disable (MX_DRAGGABLE (tab));
}